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Ryobi 990r User Manual

Page 15

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15

FREQUENCY

MAINTENANCE REQUIRED

REFER TO:

Daily or

Before

Starting

Engine

Every

10 Hours

Change oil after initial use.
Clean and re-oil air filter.

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Every

25 Hours

Change oil.

Pages 10-11

MAINTENANCE SCHEDULE

These required maintenance procedures should be performed at the frequency stated in the
table. They should also be included as part of any seasonal tune-up.

Fill fuel tank.
Check oil level.

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Pages 10-11

MAINTENANCE AND REPAIR INSTRUCTIONS

Every

50 Hours

Check spark plug condition and gap.
Check rocker arm to valve clearance.
Check spark arrester screen.

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